FR2797795A3 - Drive tool for cylindrical work piece such as pipe - Google Patents

Abstract

The tool has a handle (11) having a channel (17) for a belt (31). A partially toothed wheel (23,26) is provided for clamping a belt (31) against the handle in a certain direction. The belt is attached at one end to the handle and is guided to form a loop about the pipe.

Description

TOOL CAPABLE OF TIGHTENING AND TURNING

THE WORKED PIECE

DESCRIPTION OF THE INVENTION

  The present invention relates to a tool capable of clamping and turning the workpiece, formed of a main body provided with a lever on which are mounted a locking part, a threading groove, a tightening belt, a wheel. braking and a spring; in particular, the brake wheel being able to swing eccentrically and exert pressure on the tightening belt located in the threading groove in order to rotate the above belt in one direction (i.e. the tightening direction ) and prevent it from moving in the opposite direction (i.e.

loosening direction).

  For clamping and loosening the parts, generally suitable tools are used to rotate them, for example the left hand turner and pliers; but in some cases the above tools may not be able to do this, for example tightening and loosening pipes with polished surfaces. Let's take

  the previous example, like the surface of the jaws of the tunre-

  on the left is of a linear structure, the part contcted between the left turn and the pipes is only linear, it follows that the clamping force acting on the worked parts is only very limited, in addition, the sliding easily produced by the turner to the left causes scratching on the surface of the work pieces, and when they are fragile material, the pinch force of the turner to the left can even break them, as what, the turner -left is obviously not suitable for this

kind of work.

  Suitable for the above-mentioned work, the tool generally used

2 2797795

  comprises a main body provided with a lever, a blocking part mounted in front of the main body as well as a tightening belt provided with the main body; it forms a circle towards the front to tighten the workpiece (approximately more than half of its surface area is tightened), and the blocking part can press against the above belt and rotate the workpiece; only you have to grasp the lever and the belt at the same time to be able to tighten and rotate the workpiece when

lever handling.

  Although the structure of the aforementioned tool manages to tighten and rotate the workpiece as expected, a pulling force of the belt in tight condition occurs in the opposite direction when the lever is pulled, and this pulling force may cause the belt to slip and so on, pain in the hand which may even be injured in a serious case, in addition, it causes the belt to move and the workpiece is loosened, we can no longer tighten and do efficiently turn the workpiece; which proves that the effectiveness of the known tool and its handling safety clearly need to be

structurally improved.

  In view of this, the inventor with several years of experience in the field of development and production of relative products, after having researched repeatedly, succeeded in inventing a tool capable of clamping and turning the workpiece in order to correct faults in the known tool and correspond to

practical needs.

  Consequently, the present invention consists in providing a tool capable of tightening and rotating the workpiece, provided with a braking wheel which swings eccentrically and flexibly to exert pressure on the tightening belt; when she has

3 2797795

  tendency to move in the opposite direction (i.e. the direction of loosening), the braking wheel comes to press immediately

  against it and keep it from moving.

  Still, thanks to the above wheel being able to prevent the tightening belt in a tight state from moving, the previous belt no longer needs to be held by the hand, therefore the present invention ensures

  operator hand safety.

Description of the figures:

  Figure 1: the decomposting of the present invention.

  Figure 2: the assembly appearance of the present invention.

  Figure 3 the decomposting seen from another side showing the assembly of the tightening belt and the groove of

fixation of the present invention.

  Figure 4 the sectional view showing the assembly structure of

the present invention.

  Figure 5 the sectional view showing the operation of the present invention. Reference number (11) lever (12) locking part (13) locking teeth (14) fixing groove (15) protruding post (16) screw hole (161) screws (17) threading groove (18) assembly plate (19) screw support (21) screw pile (22) guide pile (23) braking wheel (24) assembly hole (25) guide groove (26) ratchet (27) spring ( 28) bolt (29) non-slip compressed pattern (31) tightening belt (32) fixing sleeve

4 2797795

  (33) circle to be clamped (41) the workpiece As shown in Figures 1, 2, 3 and 4, the present invention relates to a tool capable of clamping and rotating the workpiece, which essentially consists of a body main with a lever (11), a tightening belt (31), a braking wheel (23) and a spring (27); in addition, a blocking part (12) is mounted on one side of the front of the main body and extends outwards, it is provided with blocking teeth (13) obliquely in the form of a hook; on the other side of the front of the main body is cut a fixing groove (14) in which there is a protruding stake (15), yet a screw hole (16) is perpendicular to the above groove (14 ) and communicate with it; moreover, the main body is provided with a groove

  threading (17) open in the axial direction of the lever (11).

  A tightening belt (31) contains a suitable length, one of its ends is fixed in the main body, but the other end exceeds the threading groove (17); as shown in Figure 3, a fixing sleeve (32) is formed by folding back at the fixed end and encircles the protruding stake (15) located in the fixing groove (14); with a screw (161) which passes through a screw hole (16), pierces the folded part above the fixing sleeve (32), pushes in and fixes itself to the wall of the fixing groove (14), the belt ( 31) thus joins

  to the protruding stake (15) and remains in position in the groove shown

  top (14); then the other end of the belt (31) is introduced into the threading groove (17) so that a circle to be tightened (33) is

  shape in front of the main body.

  The present invention essentially consists in providing a braking wheel (23) eccentrically swinging and flexibly, which is responsible for moving the tightening belt (31) in one direction and preventing it from moving in the opposite direction. Like what

2797795

  show the figures, on the hollow part of the main body is put in place an assembly plate (18) which communicates with the threading groove (17); and on this plate (18) are mounted a guide pile (22) and a screw-in support (19), then on which is also mounted a screw-on pile (21); also in the braking wheel (23) are open a curved guide groove (25) and an assembly orifice (24) allowing the above wheel (23) to attach to the main body, and this wheel ( 23) has a

  rachet (26) and a non-slip compressed pattern (29).

  The braking wheel (23) joins the screw support (19) of the assembly plate (18) through the assembly hole (24), this allows the screw pile (21) to come out of the hole (24) and bolt (28) to be screwed to the pile (21), as what the brake wheel (23) in the fixed position can swing; the guide groove (25) of the above wheel (23) is equipped with a spring (27), one end of which is fixed to the guide pile (22) and which pushes the braking wheel (23) so that the ratchet (26) moves towards the wall of the threading groove (17) and so that the tightening belt (31) is

  pressed using the elasticity of the spring (27).

  During use (see Figure 5), the circle to be tightened (33) of the belt (31) surrounds the workpiece (41) and thanks to the braking wheel (23) can swing eccentrically and flexibly, the movement of the tightening belt (31) located in the threading groove (17) causes the braking wheel (23) to swing outward when empty, the belt (31) can thus move in one direction and adjust the circle clamping (33) so that the workpiece (41) is surely clamped; the belt (31) in the tightened state produces a pulling force in the opposite direction, in particular when the lever (11) is pulled, a greater attraction, making the blocking part (12) press against the belt (31 ) and the workpiece (41), is formed in the blink of an eye and on the side of the belt (31) located in the threading groove (17), this force of

6 2797795

  traction pushes the braking wheel (23) to bear against the wall of the above groove (17) so that the belt (31) does not move in the opposite direction. As shown in the figures, when the lever (11) is pulled, the locking teeth (13) of the locking part (12) and the ratchet (26) of the braking wheel (23) respectively exert pressure on the workpiece (41) and the tightening belt (31) and hinder them; moreover, the locking teeth (13) and the ratchet (26) are all in the wedging position, the belt (31) which clamps the workpiece (41) is therefore in the fixed position, then once the lever (11 ) is drawn, the coin

  worked (41) can be tightened and turned.

  And what is worth mentioning is thanks to the braking wheel (23) which can swing eccentrically and to the wedging function in the form of an inverted hook between the ratchet (26) and the tightening belt (31 ), and when the lever (11) is pulled, that the belt (31) is provided with the traction force in the opposite direction and immediately trapped by the braking wheel (23); moreover, the stronger this force, the greater the wedging force, therefore, the belt (31) does not move in the opposite direction and does not relax, on the other hand, using this, it can bear even more

  torsional force and better meets practical needs.

  As the belt (31) does not loosen in the opposite direction due to the braking wheel (23), it can be introduced into the threading groove (17) so that it does not come into contact with the hand during use, as what the operation of the tool is ensured. When we want to loosen the belt (31) and the workpiece (41), we push the non-slip compressed pattern (29) of the braking wheel (23) towards the direction of empty swinging, then the force of wedging acting on the belt (31) is released, then this allows to remove the belt (31) from the threading groove (17) and separate the belt (31) from the workpiece (41), while waiting

7 2797795

  as the thrust acting on the braking wheel (23) is released, the wheel (23), going with the spring (27), releases its pressure on the

wall of the threading groove (17).

  To conclude, the present invention relates to a main body provided with a lever (11), on which is mounted a braking wheel (23), which swings eccentrically and flexibly so as to make the tightening belt (31) move freely in one direction and jam in the opposite direction, like what, its renovated structure in order to tighten and rotate the work piece (41) and

  to ensure the operation has really progress and efficiency.

8 2797795

Claims (4)

  1. Tool capable of clamping and turning the workpiece, essentially comprising a main body provided with a lever (11) and a tightening belt (31), characterized in that in one side of the front of the main body is mounted a blocking part (12), extending outwards, in that a threading groove (17) is cut from one end to the other of the main body in the axial direction of the lever (11 ), in that one end of the tightening belt (31) is fixed in the main body and the other end is threaded in the threading groove (17) so that a circle to be tightened (33 ) is formed at the front of the main body, and in particular that on the main body is mounted a braking wheel (23) provided with a spring (27) which allows said wheel (23) to swing eccentrically and flexibly so that the belt (31) in the threading groove (17) can move freely in one direction and not move in the opposite direction depending on the rocking at   vacuum and the brake wheel lock (23).   2. Tool capable of clamping and turning the workpiece according to claim 1, characterized in that in the hollow part of the main body is put in place an assembly plate (18), which communicates with the threading groove (17), on said plate (18) are mounted a guide pile (22) and a screw support (19) on which is also mounted a screw pile (21), in that in the braking wheel (23 ) engage an assembly orifice (24) and a curved guide groove (25), by which said wheel (23) combined with the support (19) and the screw pile (21) is screwed using with a bolt (28) and can swing thanks to the spring (27) installed in the guide groove (25) and fixed from one end to the guide pile (22). 9 2797795   3. Tool capable of clamping and turning the workpiece according to claim 1, characterized in that the ratchet (26) in the form of a hook on the surface of the braking wheel (23) makes   press said wheel (23) against the tightening belt (31).   4. Tool capable of clamping and turning the workpiece according to claim 1, characterized in that there is a compressed non-slip pattern (29) on the surface of the braking wheel (23).